Stopper for a syringe plunger rod



FIG. 1 is a perspective view from the distal end of the stopper of the present invention positioned at the distal end of a plunger rod;

FIG. 2 is an enlarged perspective view of the stopper of FIG. 1;

FIG. 3 is an end elevation view of the stopper of FIG. 1; and,

FIG. 4 is a side elevation view of the stopper of FIG. 1.

The broken line showing in the FIGS. 1, 2 and 3 are for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a stopper for a syringe plunger rod, as shown and described. 